Update from https://crrev.com/316786

net/quic/test_tools/quic_config_peer.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/test_tools/quic_config_peer.h"
 
 #include "net/quic/quic_config.h"
 
 namespace net {
 namespace test {
@@ skipping 27 matching lines @@
     const QuicTagVector& options) {
   config->connection_options_.SetReceivedValues(options);
 }
 
 // static
 void QuicConfigPeer::SetReceivedBytesForConnectionId(QuicConfig* config,
                                                      uint32 bytes) {
   config->bytes_for_connection_id_.SetReceivedValue(bytes);
 }
 
-// static
-QuicTag QuicConfigPeer::CongestionFeedback(QuicConfig* config) {
-  return config->congestion_feedback_.GetTag();
-}
-
 }  // namespace test
 }  // namespace net